Teensy 4.1 no power from onboard 3.3v and Vin pins


New member

This may be a simple fix however I wasn't able to find a resolution.

I have a Teensy 4.1 with no power being received from either its 3.3v or Vin pins as tested with a multimeter on DC read settings. I had no previous issues with this board before the current project of using it to interface with a PCM5102A board (Link), which I found as the DAC board was not being powered by the Teensy when connected to either its 3.3v out or Vin. When connected to an external power source, the DAC board does turn on which isolates the issue to the Teensy. The Teensy is recognized in the IDE, prints to Serial, and the Blink sketch runs with no issue and the onboard LED turns on, however when measured with multimeter, there is no voltage output on pin 13 during the sketch.

Is there anything I'm missing here?
Friendly reminder to check the orientation of your board in its terminal block housing as I had mine backwards.... Think it's time for some coffee.